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authorAl Viro <viro@zeniv.linux.org.uk>2024-04-02 05:29:44 +0300
committerPaul E. McKenney <paulmck@kernel.org>2024-04-10 08:06:00 +0300
commit7e00072915b3eb4739c57e716031f40de05e7a64 (patch)
treee4e4bba575fe6caa6b4634c53ce43a6cf4ac3f0d /arch/parisc
parent29b8e53c1274f0ffda915ac6c0e5c59d14ee208e (diff)
downloadlinux-7e00072915b3eb4739c57e716031f40de05e7a64.tar.xz
parisc: unify implementations of __cmpxchg_u{8,32,64}
identical except for type name involved Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/lib/bitops.c51
1 files changed, 16 insertions, 35 deletions
diff --git a/arch/parisc/lib/bitops.c b/arch/parisc/lib/bitops.c
index ae2231d92198..cae30a3eb6d9 100644
--- a/arch/parisc/lib/bitops.c
+++ b/arch/parisc/lib/bitops.c
@@ -56,38 +56,19 @@ unsigned long notrace __xchg8(char x, volatile char *ptr)
}
-u64 notrace __cmpxchg_u64(volatile u64 *ptr, u64 old, u64 new)
-{
- unsigned long flags;
- u64 prev;
-
- _atomic_spin_lock_irqsave(ptr, flags);
- if ((prev = *ptr) == old)
- *ptr = new;
- _atomic_spin_unlock_irqrestore(ptr, flags);
- return prev;
-}
-
-u32 notrace __cmpxchg_u32(volatile u32 *ptr, u32 old, u32 new)
-{
- unsigned long flags;
- u32 prev;
-
- _atomic_spin_lock_irqsave(ptr, flags);
- if ((prev = *ptr) == old)
- *ptr = new;
- _atomic_spin_unlock_irqrestore(ptr, flags);
- return prev;
-}
-
-u8 notrace __cmpxchg_u8(volatile u8 *ptr, u8 old, u8 new)
-{
- unsigned long flags;
- u8 prev;
-
- _atomic_spin_lock_irqsave(ptr, flags);
- if ((prev = *ptr) == old)
- *ptr = new;
- _atomic_spin_unlock_irqrestore(ptr, flags);
- return prev;
-}
+#define CMPXCHG(T) \
+ T notrace __cmpxchg_##T(volatile T *ptr, T old, T new) \
+ { \
+ unsigned long flags; \
+ T prev; \
+ \
+ _atomic_spin_lock_irqsave(ptr, flags); \
+ if ((prev = *ptr) == old) \
+ *ptr = new; \
+ _atomic_spin_unlock_irqrestore(ptr, flags); \
+ return prev; \
+ }
+
+CMPXCHG(u64)
+CMPXCHG(u32)
+CMPXCHG(u8)